Improvement in car-axle boxes



IJH. RANDALL. Gar Axle Box.

No. 201,944. Patented April 2,4878; I

e Ill/ r! y fl y 1 -UNITED STATES PATENT OFFICE.

ISAAC H. RANDALL, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN CAR-AXLE BOXES.

Specification forming part of Letters Patent N o. 20 1,944, dated April'2, 1878; application filed October 6, 1877.

To all whom it may concern:

Be it known that I, ISAAC H. RANDALL, of Boston, in the county ofSuffolk and Commonwealth of Massachusetts, have invented a new anduseful Improvement in Oar-Axle Boxes, which improvement is fully setforth in the following specification and accompanying drawing, in which-Figure 1 shows a vertical cross-section of the ear-axle box and axle.Fig. 2 shows a vertical longitudinal section of the axle-box. Fig. 3shows the bearing-saddle of the box, and Fig. 4 shows the upperlubricating-box and filter.

The objects of my invention are, first, to provide a more convenient andeconomical manner of lubricating the bearing of the saddle of the boxupon the journal of the axle; and, second, to prevent any sidewiseslidingmotion of the saddle of the box upon the journal of the axle.

In the drawings, a is the journal of the axle. b is the bearing-saddleof the box. 0 is the upper lubricatingbox and filter. dis a tank foroil. 6 is a wick; f, holes in the bearin g-saddle, to admit the passageof oil through it to the journal of the axle. g is a rib on the journalof the axle, which fits into a corresponding groove, h, in the innerside of the bearing-saddle of the box.

The oil-tank d contains the oil for lubricating the journal of the axleand the inner side of the bearing-saddle of the box. The passage fromit, which should be aboutone-quarter inch in diameter, is filled with awick compressed to a degree of solidity that will admit a flow of oiljust sufficient to properly lubricate the journal of the axle and thebearingsaddle. A portion of the wick is coiled in the bottom of thetank, and a portion of it is coiled in a cavity in the upper side of theupper lubricating-box c. The oil, after being conducted by the wick tothe cavity in the upper side of the box 0, flows through the holes f tothe surface of the journal a; and if the Wick is properly adjusted therewill be no saddle, or a similar motion of the bearing-saddle on thejournal a, impossible, and prevents the wearing away of the shoulders onthe journal and the ends of the bearing-saddle, which occurs with thejournal of the axle and the bearing-saddles as heretofore made.

I claim- In a car-axle box, in combination with the outer shell, theperforated bearing-saddle in one or two parts, having a transversegroove on its inner bearing side to receive a corresponding rib on thejournal, upon which the bearing-saddle rests, about midway between theshoulders at each end of the journalbearing,and an oil-passage from anoil-tank located on or in the box above the bearing-saddle, so filledwith wick or other porous substance that the downward flow of oil willbe regulated by it with precision, and an oiltank, all arrangedsubstantially as and for the v purpose specified.

ISAAC H. RANDALL. Witnesses:

OHs. HOUGHTON, W. E. RICHARDS,

